Cab-seat back



T. E. WARREN.

Car Seat.

Patented July 30, I850.

UNITED STATES PATENT @FFICE.

THOMAS E. WARREN, OF TRQY, NEW YORK.

CAR-SEAT BACK.

Specification of Letters Patent No. 7,539, dated Ju1y 30, 1850.

To all whom it may concern:

Be it known that I, Trros. E. WARREN, of Troy, in the county of Rennselaer and State of New York, have invented a certain new and useful Mode of Constructing Spring Railroad-Car and other Seat Backs; and I do hereby declare that the followingis a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specification in Which Figure 1 is a perspective View of a car seat with my new construction of back, and Fig. 2 is a lateral longitudinal section through the same, taken at the line 00, m, of

Fig. 1.

which has beads of iron (5, 5,) which surround it and are bent over the edge to give the proper stiffness and strength to the back,

a, is a brace placed in the short crook between the two main curves to give strength and retain it in proper form this back is attached to the arms by long rods afliXed to its extreme ends by which its motion is allowed and in some measure aided. It will be readily seen that this form of back constitutes an easy elastic resting position for the back, and yields to sudden concussion; the amount of spring may be regulated by the length of the brace (0,) between the two curves for the rest of the back, most clearly represented in Fig. 2.

Having thus fully described my improved spring back car seat what I claim as my invention and desire to secure by Letters Patent is The forming of the backs of car seats of herein specified.

THUS. E. WARREN.

WVitnesses:

E. BELL,

E. G. BR NDAGE. 

